Twin or Single Round Throttle Body for better throttle response?
Twin or Single Round Throttle Body for better throttle response?
(OP)
Hi all,
I have been looking for an answer to this and I cannot find one. So here is my question...
The surface area of 57mm twin round throttle body set-up is 31 in.^3 and the surface area of a 75mm single round throttle body set-up is 28 in.^3.
Now to the actual question...
Does smaller (twin) throttle bodies allow the gas pedal to be less "touchy" under part throttle conditions.
In other words, assuming both throttle bodys (twin and single) have the same surface area on the blade, would the twin be more manageable under part throttle conditions.
This seems automotive, but I figured you professionals would better be able to help me.
I hope this made sense. Thank you guys and gals.
I have been looking for an answer to this and I cannot find one. So here is my question...
The surface area of 57mm twin round throttle body set-up is 31 in.^3 and the surface area of a 75mm single round throttle body set-up is 28 in.^3.
Now to the actual question...
Does smaller (twin) throttle bodies allow the gas pedal to be less "touchy" under part throttle conditions.
In other words, assuming both throttle bodys (twin and single) have the same surface area on the blade, would the twin be more manageable under part throttle conditions.
This seems automotive, but I figured you professionals would better be able to help me.
I hope this made sense. Thank you guys and gals.





RE: Twin or Single Round Throttle Body for better throttle response?
Hope that helps.
RE: Twin or Single Round Throttle Body for better throttle response?
There are a multitude of factory setups which utilise two tb's feeding a common plenum.
I think what you are looking for has merit (throttle response and control)-however, if you match the effective cross sectional area twin, or single, you will find the throttle response will be similar. The advantage of a twin tb setup is that you can stage the butterflies for very controllable throttle response. Something else that you can do if you want to keep it simple with a single tb is to actuate the throttle plate with a 'cam', so you get increasing throttle plate rotation rate.
RE: Twin or Single Round Throttle Body for better throttle response?
Can you explain to me how the "cam" works for the single throttle body, and reason for it? I have heard of them discussed before.
Also, what do you mean that a two-blade throttle body set-up can be better "staged"?
RE: Twin or Single Round Throttle Body for better throttle response?